Here is the first draft of the schematic. This is the Japanese version that comes with the orange battery cover. My son in law has the version made in Sri Lanka but, this Japanese one sounds better. I prefer this pedal on my guitars with humbuckers. It does for hummers what a Tube Screamer does for single coils.

Enjoy!

TD

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Diodes would be japanese 1s2076 I guess. They're very close to the common 1n4148.

gretsch8217 wrote:Any recommendations on how to modify this pedal to have less distortion or gain? I was expecting this pedal to be more of an overdrive, but to my ears, it sounds more like a distortion pedal.